[PATCH v4 05/10] visorbus: switch from ioremap_cache to memremap

Dan Williams
2015-08-11T03:44:05Z

In preparation for deprecating ioremap_cache() convert its usage in
visorbus to memremap.

Cc: Benjamin Romer <benjamin.romer@unisys.com>
Cc: David Kershner <david.kershner@unisys.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/staging/unisys/visorbus/visorchannel.c | 16 +++++++++-------
drivers/staging/unisys/visorbus/visorchipset.c | 17 +++++++++--------
2 files changed, 18 insertions(+), 15 deletions(-)

diff --git a/drivers/staging/unisys/visorbus/visorchannel.c b/drivers/staging/unisys/visorbus/visorchannel.c
index 20b63496e9f2..19c4a78a3617 100644
--- a/drivers/staging/unisys/visorbus/visorchannel.c
+++ b/drivers/staging/unisys/visorbus/visorchannel.c
@@ -21,6 +21,7 @@
*/

#include <linux/uuid.h>
+#include <linux/io.h>

#include "version.h"
#include "visorbus.h"
@@ -36,7 +37,7 @@ static const uuid_le spar_video_guid = SPAR_CONSOLEVIDEO_CHANNEL_PROTOCOL_GUID;
struct visorchannel {
u64 physaddr;
ulong nbytes;
- void __iomem *mapped;
+ void *mapped;
bool requested;
struct channel_header chan_hdr;
uuid_le guid;
@@ -93,7 +94,7 @@ visorchannel_create_guts(u64 physaddr, unsigned long channel_bytes,
}
}

- channel->mapped = ioremap_cache(physaddr, size);
+ channel->mapped = memremap(physaddr, size, MEMREMAP_WB);
if (!channel->mapped) {
release_mem_region(physaddr, size);
goto cleanup;
@@ -113,7 +114,7 @@ visorchannel_create_guts(u64 physaddr, unsigned long channel_bytes,
if (uuid_le_cmp(guid, NULL_UUID_LE) == 0)
guid = channel->chan_hdr.chtype;

- iounmap(channel->mapped);
+ memunmap(channel->mapped);
if (channel->requested)
release_mem_region(channel->physaddr, channel->nbytes);
channel->mapped = NULL;
@@ -126,7 +127,8 @@ visorchannel_create_guts(u64 physaddr, unsigned long channel_bytes,
}
}

- channel->mapped = ioremap_cache(channel->physaddr, channel_bytes);
+ channel->mapped = memremap(channel->physaddr, channel_bytes,
+ MEMREMAP_WB);
if (!channel->mapped) {
release_mem_region(channel->physaddr, channel_bytes);
goto cleanup;
@@ -167,7 +169,7 @@ visorchannel_destroy(struct visorchannel *channel)
if (!channel)
return;
if (channel->mapped) {
- iounmap(channel->mapped);
+ memunmap(channel->mapped);
if (channel->requested)
release_mem_region(channel->physaddr, channel->nbytes);
}
@@ -241,7 +243,7 @@ visorchannel_read(struct visorchannel *channel, ulong offset,
if (offset + nbytes > channel->nbytes)
return -EIO;

- memcpy_fromio(local, channel->mapped + offset, nbytes);
+ memcpy(local, channel->mapped + offset, nbytes);

return 0;
}
@@ -262,7 +264,7 @@ visorchannel_write(struct visorchannel *channel, ulong offset,
memcpy(&channel->chan_hdr + offset, local, copy_size);
}

- memcpy_toio(channel->mapped + offset, local, nbytes);
+ memcpy(channel->mapped + offset, local, nbytes);

return 0;
}
diff --git a/drivers/staging/unisys/visorbus/visorchipset.c b/drivers/staging/unisys/visorbus/visorchipset.c
index bb8087e70127..e3c55ccf929b 100644
--- a/drivers/staging/unisys/visorbus/visorchipset.c
+++ b/drivers/staging/unisys/visorbus/visorchipset.c
@@ -119,7 +119,7 @@ static struct visorchannel *controlvm_channel;

/* Manages the request payload in the controlvm channel */
struct visor_controlvm_payload_info {
- u8 __iomem *ptr; /* pointer to base address of payload pool */
+ u8 *ptr; /* pointer to base address of payload pool */
u64 offset; /* offset from beginning of controlvm
* channel to beginning of payload * pool */
u32 bytes; /* number of bytes in payload pool */
@@ -401,21 +401,22 @@ parser_init_byte_stream(u64 addr, u32 bytes, bool local, bool *retry)
p = __va((unsigned long) (addr));
memcpy(ctx->data, p, bytes);
} else {
- void __iomem *mapping;
+ void *mapping;

if (!request_mem_region(addr, bytes, "visorchipset")) {
rc = NULL;
goto cleanup;
}

- mapping = ioremap_cache(addr, bytes);
+ mapping = memremap(addr, bytes, MEMREMAP_WB);
if (!mapping) {
release_mem_region(addr, bytes);
rc = NULL;
goto cleanup;
}
- memcpy_fromio(ctx->data, mapping, bytes);
+ memcpy(ctx->data, mapping, bytes);
release_mem_region(addr, bytes);
+ memunmap(mapping);
}

ctx->byte_stream = true;
@@ -1327,7 +1328,7 @@ static int
initialize_controlvm_payload_info(u64 phys_addr, u64 offset, u32 bytes,
struct visor_controlvm_payload_info *info)
{
- u8 __iomem *payload = NULL;
+ u8 *payload = NULL;
int rc = CONTROLVM_RESP_SUCCESS;

if (!info) {
@@ -1339,7 +1340,7 @@ initialize_controlvm_payload_info(u64 phys_addr, u64 offset, u32 bytes,
rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID;
goto cleanup;
}
- payload = ioremap_cache(phys_addr + offset, bytes);
+ payload = memremap(phys_addr + offset, bytes, MEMREMAP_WB);
if (!payload) {
rc = -CONTROLVM_RESP_ERROR_IOREMAP_FAILED;
goto cleanup;
@@ -1352,7 +1353,7 @@ initialize_controlvm_payload_info(u64 phys_addr, u64 offset, u32 bytes,
cleanup:
if (rc < 0) {
if (payload) {
- iounmap(payload);
+ memunmap(payload);
payload = NULL;
}
}
@@ -1363,7 +1364,7 @@ static void
destroy_controlvm_payload_info(struct visor_controlvm_payload_info *info)
{
if (info->ptr) {
- iounmap(info->ptr);
+ memunmap(info->ptr);
info->ptr = NULL;
}
memset(info, 0, sizeof(struct visor_controlvm_payload_info));